Vacuum-pump.



C. L. HEISLER.

VACUUM PUMP.

APPLICATION FILED APR. 23, 1907.

Patented Jan. 12, 1909.

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CHARLES L. HEISLER, OF ST. MARYS, OHIO.

VACUUIMLFUMP Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed April 23, 1967. fierial No. 369,869.

To all whom it may concern:

Be it known that 1, CHARLES L. HEISLER, a citizen of the United States, residing at St. Marys, in the county of Auglaize and State of Ohio, have invented certain new and useful Improvements in Pumps, More Particularly Relating to that Type Known as Single Acting Vertical Wet Vacuum Pumps, of which the following is a description and is shown by a cross section in Figure 1 of the drawing.

The principal object of my invention is to provide a more perfect means of causing the water accumulating in the bottom chamber to be splashed upward and into the upper cylindrical chamber on the downward stroke of the plunger. Also to provide an effective and quietly acting discharge valve.

The device consists essentially of an inclosing shell 1, having arranged therein a pump cylinder 2, having a lining 16. A vertical reciprocating plunger 4 attached to a suitably driven piston rod 3; a semi-spherical bottom 13 is arranged directly below the cylinder 2, which, with its lining 16, extends downward into the semi-spherical bottom. Inlet ports 10 are arranged to form a girth around the periphery of the cylinder and are at some distance above the semi-spherical bottom or lower end of the cylinder. As shown a downwardly projecting rim 11 is formed on the cylinder directly over the ports 10 in such a manner as to form curved guiding passages or elongated ports 12 with their inlets or mouths opening downward and registering with the ports 10 at their upper or discharge end. 1t will be seen that the diameter of the outer edge or rim of these ports is greater than that of the semi-circular bottom 13, so that when the downward thrust of the plunger, 4 causes an upward splash of water, the latter will strike the concave surface of the ports 12 and be guided thereby through the ports 10 and into the cylinder above the plunger.

The air and water enter into the pump through the inlet 8 and accumulate in the bottom 13. The plunger lifts them on the upward stroke and discharges them through the outlet 9 after lifting the kettle shaped valve 5, which, because of its peculiar form as shown, meets the upward movement of the water filled plunger without sudden resistance or shock and quietly lifts against the resistance of the atmospheric pressure and spring 6. The outlet 9 is some distance above the valve so it is always water sealed. A soft gum or soft packing 15 is arranged to form a seat ring for the valve 5, which reciprocates on the piston rod 3.

There is arranged in the casting 1 adjacent to the rim of the semi-spherical bottom 13, a semi-circular depression 14: to aid in guiding the entering liquids upward into the port passages 12.

V] hat I claim is:

1. In a reciprocating piston pump, the combination with a cylinder provided with a dis charge passage, of a discharge valve therefor, a piston reciprocating therein, and an inlet passage, said cylinder being provided with ports arranged in its side wall and with a flange adjacent to and overhanging said ports projecting towards the end of the cylinder opposite the discharge passage registering with said ports and forming a continuous annular passage surrounding the cylinder in communication with the said end of the cylinder and with the inlet passage.

2. In a reciprocating piston pump, the combination with a cylinder provided with a discharge passage, of a discharge valve therefor, a piston reciprocating therein, and an inlet passage, said cylinder being provided with ports arranged in its side wall and with a flange adjacent to and overhanging said ports projecting towards the end of the cylinder opposite the discharge passage registering with said ports and in communication with the said end of the cylinder and with the inlet passage, and a semi-spherical bottom arranged below said cylinder, said inlet passage communicating with said annular passage under the edge of the flange around the entire circumference of the cylinder.

3. In a vertical reciprocating pump, the combination of a cylinder having a plunger arranged to reciprocate therein, an inlet and discharge outlet, a discharge valve, there being ports arranged in the vertical wall of said cylinder, said discharge valve being made kettle shaped with its convex side proj ecting downward into said cylinder for the purpose described.

4. In a vertical reciprocating pump, the combination of a cylinder having a plunger arranged to reciprocate therein, an inlet and discharge outlet, a discharge valve, there being ports arranged in the vertical wall of said cylinder, said discharge valve being made kettle shaped with its convex side projecting downward into said cylinder and said cylinder having a downwardly projecting rim directly over said ports for the purpose described.

5. In a vertical reciprocating pump, the combination of a cylinder having a plunger arranged to reciprocate therein, an inlet and discharge outlet, a discharge valve, there being ports arranged in the vertical wall of said cylinder, said discharge valve being made kettle shaped with its convex side pro- 10 CHARLES L. HEISLER.

Witnesses E. L. STOKER, E. E. FISH. 

